Re: do you think IM2 was better or worse than the original?
I think Stane was pretty much off the deep end since the beginning of IM1, since he was the one who ordered Tony's assassination. With that relevation, all his villainy afterward seemed quite logical. I think the only thing lacking about that is we still don't know why he ordered the initial hit on Tony. It was never clearly explained why he wanted to "kill the golden goose".
Ivan's motivation was quite shallow to me. We know the reasons why he wants to kill Stark, but it's a little cliched and 'ordinary' and wasn't enough for me to see why it made him so driven. If the film helped us explore his quest for revenge a little bit, it would have made Ivan more well rounded as a character.
Revenge will Devastate you