The reson why I say karatos is bad at dojo is when I play againts him (espesially 1v1v1v1) and im saxckboy I usally own every one and the kratos's seemed to do bad, because there attacks are "to ranges" idk maybe I just own at dojo with sackboy.....
Sweet Tooth is fairly versatile stage wise. His only hindrance are platforms that block mines, and stages ill suited to his level 3. I'd say his best is Hades (wide open, level 1stun victims) with his worst being Dreamscape and then Time station
I completely agree with you about his worst stages, but I wouldn't say that Hades is his best. The easy lvl1 kills are a plus but it's big enough that getting knocked away from the fight can cost precious seconds (assuming FFA) and it will always have at least one blind spot that Sweetbot can't reach with the gun.
The future, is in the past... ONWARD, AOSHIMA!