Depends.
Firepower: Barricade carries a gun that can't even visibly damage Mirage's armor in DOTM while Jazz's weapon mamaged to at least ripped off some pieces from the armor Megatron's, of all TFs.
Agility: While Barricade isn't a living statue (he was able to doa a front flip while kicking Bumblebee in the face.), I believe Jazz is more agile.
Barricade seem to be more violent and destructive in h2h combat but I think if Jazz plays his cards straight (like shooting Barricade while evading his attacks) he could potentially win.
This could go either way.
Bump. This is a really good fight.
In melee combat, Barricade is slightly larger and more violent and savage, he has a flail that’s very deadly, but Jazz is faster and more agile, and he’s probably more skilled in melee combat.
In firepower, we’ve only seen Barricade use his gun once in DOTM, and that was when he killed a badly injured Que with one shot. But that was the same fun that was being used by Decepticon Protoforms which displayed rapid firepower, but it didn’t seem to be that impressive. Jazz however, has displayed firepower that has burned a hole in Brawl’s chest and staggered him, and it has ripped off tiny shards of Megatron’s shoulder. Jazz probably has superior firepower, but I don’t think it’s fair to say that with confidence because we’ve not seen Barricade get a proper chance to demonstrate his firepower’s capabilities.
This is close to going either way to be honest, I’ll say that Jazz would probably win the majority of times by an extremely slight advantage.