Oh I forgot Terraforming is also a regular cdrom2, some of the best looking 16bit graphic games are cdrom2 games which is only 64k of memory... of course we have to remember that none of that memory includes the music or cutscenes, you can also laod that 64k of twice during each level, once for the regular level and once for the boss, that means in theory you have one megabit per level and that doesn't include music so you can see why they are more impressive than hucard games, what vertical shooter on hucard comes close to spriggan or horizontal shooter on hucard compares to Macross 2036
Supercd games have in theory 2 megs of memory per level, again, not including music or cutscenes etc I compared the sprite size of winds of thunder to some of the best 16 bit shooters and the sprites are about 2.2 trillion times larger I believe, plus when you add the huge variety of sprite and their frames up, instead of a few hundred sprite frames the best 16 bit cartridge games you have around a thousand sprite frames for the entire game, now look at the background detail, in two levels alone, you just about have more variety than in entire games like lightning force, violent soldier or Macross sd for the super famicom, we are so lucky to have gotten a system like the pc engine.