Its hard to tell from the small shots but the sega cd port of lords of thunder uses more dithering than just about any game Ive seen but thats not the only difference, take the 3rd picture down, the columns in the BG look different in the sega cd version( top and bottom), the missing water of course, the 8th picture down, in the sega port the BG disappears before the foreground starts to close inn(I find that strange) and the 14th picture down, once again missing BG tiles where the giant spiked balls
swing back and forth.
Hudson really tried to make the game as colorfull as they could(the pce version some times uses more than two and a half times the colors), enemy sprites would use the same colors as were in the BG, those same sprites would use a different palette for a different BG(level) and of course lots dithering.
Tatsujin was one of the first games i was thinking about doing, but hate the idea of playing through that game twice.