Aight, I'll take away the likely, keep you antennas on bud.
If Maul is starting at a lower point, that's going to end up lowering where SOD Maul ends up anyway, but as I've acknowledged, Maul was hindered.
Frankly though, while I've given Maul a pass in assuming he was equally hindered as Kenobi was, that's rather generous of me given that Feloni seems to give more weight to Kenobi's hindrance and situation than Maul's. When discussing the fight at detail on Star Wars Celebration, emphasis isn't given to how Maul was rusty as fck, but rather on how Kenobi was set up to lose. For one he describes the situation Kenobi is in mentally as coming across a "worst case scenario": https://youtu.be/n8PEGa3Wq50?t=13m22s
Note, this is just Feloni commenting on Kenobi's mental situation. Setting aside that he's physically in no state to fight.
On the other hand, when going into detail about the fight, Maul's rustiness isn't brought up. In fact I'm wondering if anything in canon explicitly states anything about Maul being rusty. While it's a more than reasonable assumption, that we have to assume one, while Kenobi's hindrances are explicitly emphasized tells me we should be giveng Kenobi's disadvantages more weight.
1. As noted, both were hindered. However Maul getting taken out twice can't be blamed on the environment's crowded space here as Maul was able to fully extend himself and use his full range of motion(taking into consideration his impaired agility) for the duration of time said hits occurred on. In fact, arguably, the crates cushioned the blow considering Maul otherwise would have hit a harder floor.
2. While Maul had impaired agility, Kenobi was a physical wreck. Even at the start of what we of this torture session Kenobi was put through, he was clearly in no state to fight: https://youtu.be/tgUfVYZxTjg?t=37s
Already Kenobi's heavily panting and gasping for air.
Then later we see Kenobi needing to lean on Oppress to stand up(still early into what we see): https://youtu.be/tgUfVYZxTjg?t=44s
3.I find your assertion that Maul's hindered agility is worth noting but Kenobi not even being able to stand up on his own before going through more torture comparatively insignificant to be rather laughable.
4. That Kenobi was able to outmaneuver and avoid Maul's charges when in such bad physical shape and land multiple kicks on Maul speaks highly of Kenobi compared to Maul's inability to cope with impaired agility.
5. As you've pointed out, Maul did land two kicks. But this wasn't Maul passing up on a killing blow, as I've pointed out, this was Maul acting in desperation to prevent himself from getting bisected at the waist a second time. Note that right before the kicks, Kenobi downs Maul's blade and then swings for a perfectly free strike to Maul's waist. Maul didn't bother worrying about trying to kill Kenobi because he was too busy saving his own life. And as it is, despite Kenobi's awful physical state, Kenobi got right up(unlike maul) and would later end up driving maul back despite being physically demolished.
6.As for your claim that Maul wasn't trying to kill Kenobi, you're taking things out of context. When Maul says he never planned on killing Kenobi, that was a simpler way of saying, he never planned on killing Kenobi whenhe lured him to Mandalore. Maul makes rather obvious he fully intends on killing Kenobi during the torture session you laughably tried to dismiss as a non factor in the fight: https://youtu.be/tgUfVYZxTjg?t=2m1s
Maul was fully intending to kill Kenobi until luring him to Mandalore (when he became aware of Kenobi's love interest). To be fair, I have no idea why you think Kenobi wasn't trying to kill Maul here given he almost bisected him.
7. While both were hindered(honselty, Kenobi, moreso), Kenobi had a clearly better performance.
8. Additionally this fight puts cold water on your assertion Maul can outlast Kenobi given how much Kenobi tanks here despite his awful physical state.
9. I should note Kenobi was "more or less stalemating" overall for the fight which becomes an indictment of how Maul performed when you consider how much of Maul eventually winning would be attributed to him unbalancing Kenobi with dun moch.
10. It's easy to look good when your opponent is toying with you so that they can have a good and enjoyable fight. As you've observed Maul is better with his post-mandalore legs. However trying to assert said boost is enough to bridge the gap between his woeful performance vs an emotionally and physically hindered Kenobi in season 4 while accounting for Kenobi having almost a year to grow is purely arbitrary from season 5 is purely arbitrary.
I'll take the direct comparison in their actual fights over your speculation over how hindered Maul was opposed to Kenobi.
The only disadvantage Filoni attributes to Kenobi in the S4 finale is not being in the right mind set. Which is frankly Kenobi's own fault and could potentially happen again in future fights.
However Filoni in the S4 IGN interview specifically praised Maul for his win over a Kenobi noting HIS major disadvantage being out of practice. No specific and major disadvantage is noted for Kenobi by Filoni in any interview.