Yeah, it’s amazing how upvoted the previous comment is. Just a bunch of idiots jumping on the web-hate bandwagon when even basic media players like Kodi have a tough time playing back video on the Pi.
It just isn’t a very optimized device for video playback. The Pi 5 is actually a step backwards as well, providing only H265 hardware video decode which the web doesn’t even use.
Performance parity? Heck no, not until this bug with the GSP firmware is solved: https://github.com/NVIDIA/open-gpu-kernel-modules/issues/538