This thread is obviously a massive bait thread for sure.
As for the answers considering what these characters are able to do when going all out. I'm not going to answer for Thanos but for Thor and Surfer.
Let's be honest there isn't anything those two can't do that any other high herald flagship powerhouse character could do if the writer wanted to.
That's why I generally put High Herald characters at slight majorities over each other and mostly based on intuition and often times powerset (at this level I think the more you bring to the table the better your odds are gonna be). Unless there are obvious large discrepancies in certain power areas or there are large weaknesses that can be exploited. For instance I think Green Lanterns will always struggle against brawler-Superman level type characters because its been shown enough that Green Lanterns have a hard time with them such that I believe there is a large physical power discrepancy between them that a Superman/Gladiator/Thor can exploit for a healthy majority.
Most of the time when I give a character this high in power a nod in a category over another character in same power level it's most often a gut feeling unless that character is a role character. For instance I'll never give anyone in high herald a nod over Flash in speed, or give anyone a nod against Superman as a brawler, or give anyone a nod over Surfer in versatility not even a Green Lantern.
It's just there things that they are known to do. I'm not saying they can not be given a run for the money but I'll never give anyone a nod over them.
As for the fact that feats get taken one way for certain characters tend to be based on what the character is most known for. When the chips are down Superman is more likely to pound and out-muscle and out-speed something while Thor will be more likely to let the raw power fly to get the job done. While Flash is more likely to use his speed to get something finished Surfer is more likely to pull out exotic abilities that only he can pull off. Which is why feats for certain characters in certain areas will be rarer then it will be for others.
Which is why we know for a fact Thor can brawl a villain into submission and Surfer can take a beating and speed around and be fast, to know they can and it is within their powerset to do so.
So that is my reply to this obvious thread designed to try to enforce one person's biased perceptive need to make their own favorite such and such power character appear that much better than another high end ridiculously overpowered character or because they dislike such and such character to the point they want to downplay such and such character as much as possible.
When in reality you are dealing with such over-powered characters that there is really hardly anything they can not pull off if needed be.
So to make this reply short. In order to do any of the following you described in this thread you need to be able to produce feats greater than anything a High Herald can do unless you are talking about by the slightest margins.