Whiplash was *not* the comic version. There wasn't an Ivan Vanko Whiplash in the 616 Universe. I'm not sure if there was ever an Ivan Vanko at all in the main Marvel U, actually, but somebody may have possibly had the name. Ivan Vanko in Iron Man 2 took elements of Whiplash, but he had a heavy dose of Crimson Dynamo (Anton Vanko) thrown in. There is a Vanko Whiplash in the comics, but he only exists because of Iron Man 2. He's a modern character, and for some bizarre reason even he isn't Ivan Vanko. He's (oddly enough) also named Anton Vanko (he's not the Crimson Dynamo one).
EDIT: Also worth mentioning: that all adds up to an MCU Whiplash that has a completely different name, nationality, and ethnicity from any comic Whiplash at the time Iron Man 2 was actually made. In other words, two completely different people.