I wouldn't really accuse them of being biased, because that assumes I know their motivation, which I don't. To be fair to them, their analysis seems to be off the wall in most cases. According to them King Dedede can survive hydrogen bombs, Mega Man EXE moves more than billions of times the speed of light, Peach can kick hard enough to blow up heads, and all kind of weird shit. I think it's more stupidity than bias.
But that's mostly not on them, but rather on writers who don't have a sense of scale or how devastating in real life some things are that such characters often just shrug off. Since their data is based on these writings, it comes over as biased while it's just based on the math that the writers forgot to make. Best exemplified by the Kirby vs Boo fight and the giant pan thrown around the sun, which, with the time it took, would only be possible if Kirby is more powerful than all current space rockets combined. He certainly wasn't supposed to be that strong, but his feats are just explainable that way.
In Cloud's case for instance, it's based around the fact that all the spinoffs and in-game cutscenes seem to agree on him using those exact materia, and is always using the buster sword despite the games giving him much better options. A similar thing happened in the Tifa vs Yang fight with the materia. This is the problem they're facing with videogames: The often huge difference between what's canon an what's possible in-game. Comicbooks have the problem between the different Iterations of a specific character: Do you follow a specific one, or make an amalgamation of several versions of the same character?
So yeah, sorry that I had to play the devil's advocate here, but lots of the reasons the results look biased are out of their control and just different parts of the source material taken at face value, which is necessary to determine their contestants' strengths and weaknesses.
All that doesn't mean I agree with them all the time. For instance, I don't see how the Spartan could have won against the Doomguy since the Doomguy in-game can take rockets to the head and survive, something the Spartan can't do, which should make the Doomguy way more resilient than he was in their research. However, I would prefer if they remade the episode not as a duel as usual, but as a deathmatch between them, Serious Sam, B.J. Blazkowicz, Duke Nukem, Quakeguy, someone from Unreal (tournament) and Turok in an 8-way Deathmatch. Get Psyched indeed!
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/