The artwork in 'Iron Man Fights Back' was done by Marcelo Matere. His work is very nice, almost a mix of animated and comic styles and the coloring in photoshop came off well. The only thing odd is the illustrations of Rhodes come off like Winston from the REAL Ghostbusters, lol.
'Iron Man vs. Whiplash' features art by 'Scott Hepburn'. I don't know Scott, but I wasn't impressed with the work in this one. It almost felt rushed, like the project wasn't taken too seriously. As a collector, I would prefer the art in 'Iron Man Fights Back', mind you your kids won't even notices its different! Thats just my fanboy nerdiness.
Both of these rock n' roll!