Here's some random Dreamcast footage from the interwebs. Real hardware, not emulation. There's next to no good footage of Aero Dancing i, it's a 60fps game but this video is 48 fps and most others are 30. Other than some old school special effects it's beautiful as the series showed tangible improvements with each new iteration despite how fast they were churning these out. Compared to contemporary PC flight sims like IL-2 Sturmovik from many months later, the planes have great detail, the terrain textures are of good resolution and the pop-in for the 3D structures is quite good (granted some Aero games, i included, also released on PC). That Le Mans video isn't the best in image quality but it shows a full 24 car race with changing tod and weather. I can't find great MSR footage that shows off the insane amounts of fully modeled track detail either. I guess people mostly go back to the arcadey Dreamcast games instead of those that demanded quite some time investment when recording and uploading. Also, anyone who says Dreamcast couldn't do sandbox based on Headhunter forgets the Crazy Taxi games with their great vistas and tons of traffic that could easily be halved and still look dense if it was necessary to accomodate different types of gameplay or increase individual polycount. The pedestrians and what not don't look too bad either and yes, there's pop in, but considering all it throws up every second (again 60fps) it's great.
So, ya, of course it was powerful and didn't just have Shenmue to prove it. The polycount of the characters in DOA2
L and even the dodgy VF3tb surpassed that of TTT and VF4 on PS2 (which btw halves the arcade's so ya they were still very powerful too even if cheaper than before, Naomi 2 was a beast) and destroy that of SoulCalibur which was a crossgen kind of remaster. As great as it looked due to the great modelers at Namco, it's modest technically for what DC could do, so it could have had more such advanced game ports if it had lived longer. Many lesser DC games push more polys than you'd think but don't look like it due to their very inefficient use from either a lack of talent, budget or time, or simply the era's still evolving know how that meant not all studios were equal in their artistry, hence many early PS2 games not looking better for the most part either.
BTW, you lot should know that SEGA Retro's relevant Aero Dancing i entries are WRONG. They mention that the bonus disc released in Japan is actually an "upgraded editions" of the original game with more stuff, but in reality the dic only has the "more stuff" and doesn't include the content of the original release.It's like a DLC or expandalone and will seem barebones and/or like it throws you off the deep end if you play it first so make sure you get the original game first and the bonus disc after you exhaust it. It's the same for the whole series. For Aero Dancing i you first want just that, not Aero Dancing i Jikai Saku Made Matemasen! Of course the first couple of games in the series also released in the West, without the bonus content. I just wanted to make sure everyone is aware as that info is scarce and SEGA Retro is usually on point. It's probably what negatively affected some of the reputable sources of games (ie some archive org redumps) so they only include the bonus disc which also threw me off.
https://segaretro.org/Aero_Dancing_i vs.
https://segaretro.org/Aero_Dancing_i_Jikai_Saku_Made_Matemasen