(That guy with the knife is actually supposed to be a TIE-Pilot. It’s hard to tell why Infantino drew him like that, considering how the TIE-Pilots were featured so prominently the movie. Then again Marvel did seem to often use the Kenner toys as reference, and the TIE-pilot figure didn’t exist at this point.)
I think Infantino just took a lot of creative liberty with his renderings. Everything from ships to stormtroopers looks off compared to their counterparts in the original film.