I think they'll always be inconsistencies in the way things are ranked. My thing is pretty much this if you have 10 guys, 8 of them are proven top 10 fighters (i.e. champ, #1-2 contenders, former champ that just lost, highly ranked top 10 that just lost to another highly ranked top 10) and the other 2 are unproven guys that are making more noise than the rest of the up and comers .. you'd rank you're first 8 than throw the other 2 in there because that's the only 10 you have.
You can't put someone on the list twice and someone HAS to be in those spots. Forrest should be ranked because he has two top 10 wins over at the time the two #1 ranked fighters. That's huge. Silva gets ranked towards the bottom because after the first 8 it's a huge drop off .. there's no one under Silva that has recent top 10 wins, you can interchange him and Luiz Cane as to which prospect that doesn't have a big win that lost to a top 10 ranked fighter you like best.