LAS VEGAS -- Tony Snell made four 3-pointers in the first half and finished with 14 points, and Drew Gordon had 12 points and 12 rebounds as New Mexico overpowered top-seeded and No. 18 San Diego State 68-59 to win the Mountain West Conference tournament championship on Saturday night.Coach Steve Alford's Lobos (27-6) are headed to the NCAA tournament for the second time in three seasons.