Your math is wrong. If Myer is only making $15K above min salary, then for all intents and purposes he's making the minimum. White is essentially making twice the minimum salary (+5K). White just has to be twice as likely to make an impact. dividing 65/15 is just creating fuzzy math to justify your point - the important number is the overall relation to the minimum salary cap hit. For the CB position in MLS, you are not going to find a minimum salaried player that can be counted on to make a significant contribution, because if they could, they would have gotten a raise by now.
As to
Tom in Fairfield CT comment about worst players on worst teams..... you've got to be kidding me. There can be good players on crappy teams that don't shine which are a result of chemistry with other players, but more importantly issues with the coach - either because the coach makes asinine decisions like Kreis did this year, or because the coach has placed them in the doghouse whether right or wrong. Kreis did that - Brovsky had a hell of a game in the Cup as arguably our best defender, then a short time later went on Paternity Leave from which he didn't see the field again. Poku was categorically deemed a bench player by Kreis when the entire fan base and even the pundits were calling for him to start - that was a doghouse decision. So the point is, don't judge White's benching based on a shitty team with a questionable coach that won't play him; if he played every game like Grabavoy and still sucked, then sure, he's a crappy player on a crappy team.