"The classic version unites the graphics and gameplay of the original game with the renowned War of the Lions translation and includes convenient features such as auto save."
WotL is one of the few times where a remaster makes a lot of changes and the end result is indisputably better. Lots of jobs require another level or two to unlock meaning you can't access them quite as early, Rafa, Malak, and Reis got buffed substantially to make them more viable, divine knight sword skills got buffed to work if nothing is equipped in that slot meaning meliadoul isn't worthless against monsters, cloud is recruitable earlier (he's still worthless if they didn't lower the AT delay on his skills though), and most importantly they nerfed the everliving fuck out of the Wiegraf fight which means you don't have to use insane shit like scream/auto potion cheese to not get absolutely destroyed by his zodiac form.