All the newest games the vannila combat has always been too fast and in each Radious mod it has slowed the battles down. Maybe not massively in all the games, but he does slow the battles down and it's noticeable in Warhammer TW. The difference lies in how the modders go about slowing the battles down ( like how they tweak the morale, attacks, defense combined etc ), while both battles might be slowed down enough to actually enjoy, the way they play out because of the modding might be different. I.e one mod you might see a lot less casualties, in the same time as the other mod, but morale might be the deciding factor in that battle being won, where as in the other mod, you might see units losing more casualties, but holding longer due to morale, this is when it comes down to personal preference on how you might like your battle mods.
Radious tweaks campaign AI and diplomacy etc, in his other mods he had done a fairly decent job at it but no means is it the best. For Warhammer TW there isn't really any other Overhaul I saw that has combined effort to tweak everything from campaign to battle, the sad part is it also contains things I have to use submods to eliminate. I will probably try KAMs battle mod, but I will probably do so when I have the time to search for a bunch of other campaign mods I like.