If the PS2 could handle the Saturn's VDP2 planes in SEGA Ages line or the simple fact that the Switch handles RSG with ease and that was utter showcase and masterclass for the Saturn's VDP2. I think it's safe to safe its team to blame for their terrible remakes, rather than some tech issue The Pazner Dragoon remake was utter crap, they got the art all wrong and couldn't even get the aiming right. It's a case of a bog standard team getting hold of a respected IP to get some sales and recognition, because they aren't good enough to make one themselves . I'm amazed SEGA allows them to mess up IPs like Panzer
When you think about it, it's kind of amazing that Sega would entrust anyone else at all with HOTD after they'd just raised the bar considerably themselves with House of the Dead: Scarlet Dawn. They were setting whoever did it up for comparative failure really. I suppose it was a bit of a warning sign that Agni-Flare co-developed some aspects of Scarlet Dawn... but even they had a few ex-Sega designers who'd worked on the fourth game in their ranks.
