When in the game's lifespan do you think that characters in CoH/CoV were at their peak power? When the game was still fairly new, we didn't have a lot of the nerfs that came later, like ED, the target cap, etc. At the same time, at the end of the game we had Incarnates.
The target cap was a huge blow to the overall power. Before, you could have a single tanker herd an entire map and then a single blaster could one shot the entire map. But defense didn't work too well. The 45% softcap didn't exist, and neither did IO or set enhancements. So offensively I think that was the peak, but defensively, things got a lot better later on. After defense was changed and IO's appeared, you could have a blaster that would essentially have the same level of defense as an SR scrapper, leading to unprecedented survivability. Layering resistance/defense/healing/regen was the best way to survive, after all.
At the end, Incarnates added a whole new level of power and pretty much completely changed the game.
Overall, I would say that a fully-Incarnated, fully-IO'd character at the end of the game was overall probably more powerful than anything we had prior to that. Sure, he couldn't one shot an entire map and couldn't have perma-hasten, but in normal circumstances he would likely outperform the same build from earlier in the game. The one exception I can think of is Regen scrappers from early on, because perma Instant Healing before the IH nerf basically meant that you couldn't die, no matter what.
What do you think?