In DoS, with enough Dungeon crawling, everyone can get up to 999 hp/ 999mp/ 99 stats. Heck, my white mage came out on top first time through, being my only char with 999 in both HP and MP. Red Mages do seem to have a lot less hp than they did before, this much I did notice. Almost as low as the BM. He does however make up for it by having more armor, so even a WM with more hp will probably take less punishment than a RM will.