I thought that was also over the top, but at least it was for a select few weapons and arguably not "favored" weapon types except the rapier, which only gets +1 critical multiplier. Plus there were restrictions on its use (single weapon with an orb, runearm, or buckler on the off hand).
In the case of the Paly, there is no restrictions at all and you get +1 threat range PLUS +1 critical multiplier on any weapon as far as I can tell. For your offhand you can use a heavy or tower shield or another weapon (TWF). Or you can use a 2-hander (THF). Basically any non-bard melee would gravitate towards this.