Jeremy - if you look closely at 95.135 is says that no station shall transmit with an RF output power of more than 50 watts.
That is NOT ERP, but the raw RF coming out of the connector at the back of a repeater or a moble type radio. The Commission couldn't care less about ANTENNA GAIN and ERP for a repeater or mobile type radio. One of the systems I use each occasionally each year has a 50 watt output from the repeater into 175 feet of Andrew hardline to a stacked vertical array with 11.9 dbd gain... which is just under 600 watts taking line loss into consideration. That system is on an elevation 210 feet above average terrain and the tower is another 168 feet. It has a service diameter of over 100 miles.