2h with shield was made better, but 2h without shield wasn't made better afaik. It has always been insanely powerful. If anything, I thought the 2h/1h weapons such as longsword and morningstar without shield were slightly reduced in damage.
I damage tested 2h with shield using the in-game calc before the patch and the damage was quite pitiful compared to swinging without the shield (using appropriate wpf). At that time, 2h/1h weapons didn't have a penalty when used without shield.
Edit: To answer the question, strength against infantry, agility if you want all around utility / good speed bonus from horse and let you catch other cav.