thats not true, well maybe in the manga ( don't know) but in the anime we've seen them smiling after that soul guy-pain took out some random ninja, and the first summoner-pain really felt pain when he was trapped in jirayas waterbubble.This is in direct contrast to how its supposed to be. While Nagato main be angry or struggling, the Pains never show those reactions.
unlike the second summoner (lol oh wow, naruto doesn't make sense, who would've thought *that*....)
that would also mean, that nagato "commands" his last pain-body to talk to himself even though noone is near itSo having Pain straining and screaming while he's trying to create that meteor means that Nagato would be commanding it to do that.
so it's most likely happening subconsciously
thats not true, it was just extremely exaggerated, you either like it, hate it, or accept it... but not something we haven't seen already.And sorry, but the animation WAS shit.
Gurren Lagann for example, was full of such weird-over-the-top scenes.
however this episode had some really, really good camera angles
which made the fight look very cool