Master Yoshi
Member
It's because of the perspective. With the RTS camera pulled way back (comparatively), making a recognizable design requires a fair bit of exaggeration.
http://www.cinemablend.com/images/gallery/s14776/xbox_360_12327360367968.jpg
But Halo Wars used very low detail models for Elites, which bared little to no resemblance of those early Elite renders everyone always mentions.
I dislike the Halo Wars design because it seems to be trying hard for a menacing look, whereas these H2A designs seem to bring in the best from all worlds, so far. I like for my Elites to look formidable, yet intelligent as hell. 343's Elites in Halo 4 seemed to really lose touch with that.