From my perspective:
Zeke was a competitive beast. He consistently found the right hole to hit but where the wasn't one he'd run over guys and pick up the dirty yards. All game he'd take shots, and dish out punishment which took its toll on his opponents, he was imposing but also very good technically. Zeke back then had home run-hitting ability and was extremely well-rounded with good pass protection, impeccable body positioning, great footwork, and decent as a receiver. But what made him stand out was the violence in his game, he was a force on the field. I think we all remember Zeke in his first pre-season playing against Seattle (legion of boom days). Cam Chancellor tried to give Zeke his "welcome to the NFL" moment but it was the safety that seemed to get re-educated. It was clear as day watching him come out of college that he was gonna be special.
Bijan plays differently. I would say he's more like Saquon Barkley was coming out except he's a good athlete rather than a freak like Saquon. Similar to Saquon, to me, he seems far too willing to dance behind the LOS, and I get the feeling that will catch up with him in the NFL, don't get me wrong, the productivity speaks for itself, it is on par with Zeke and likely will translate to some degree in the NFL. I just think better athletes will punish that in the NFL, these guys are unlikely to whiff so easily. On any given play you'll see Bijan hesitate, stutter step, before jump-cutting and proceeding to stretch the field. So as a between-the-tackles runner in comparison to Zeke, he's almost the polar opposite stylistically. Because of that, I don't think he's as NFL-ready as a runner now, but Bijan's superpower is his catch radius, along with being one of the best route-running / pass-catching RBs I've seen come out of the draft. That aspect of his game is going to be a weapon day-1.
As a prospect, I think he's missing that something special that Zeke & Saquon had that pushed them into the top 10 which I thought, and still think was a mistake. But I would have taken Zeke and Saquon mid-1st round and I wouldn't do that with Bijan. He's a significant jump up on someone like Clyde Edwards-Hilaire who went the last pick in the 1st round (should have been a 2nd) but if the Eagles take him at pick 10, I'll be pretty happy, he's not worth that IMO. If we take him at 26 I wouldn't say I'm overjoyed, but I'm okay with it.