I suspect you could get there via 2 methods:
DP as ExP (If you hand out DP and level every say 40, or 50)
Goal Based ExP (Make training a goal, can be combined with above)
But either way the concept of "How many DP" really seems to be in relation to level. . .if you're earning DP/level then you need to adjust how many to the situation, even if that "How many" is merely the averege number you adjust up/down based on actions like stats or training. If you do DP advancement, you need to benchmark how many DP = a level for obvious reasons.
Neither factor there really mandates one version over the other. . . .I suspect that one thing Tim said up there becomes important; the ability to set 3 levels of skill complexity. . .you can build RMX up to RMFRP skill complexity, but it's hard to devolve RMFRP down to RMX. . .I suspect that the issue raised is not the superiority or inferiority of RMFRPs skill system, just the very inflexability to modification DJ pointed out.
Then again, I find the variations between RMC, RMFRP and HARP way overblown. . .there's very little published material from any of those three systems that I've seen that I'd have a terrible difficulty adapting from one to the other. The three are at least as similar to each other as D&D, AD&D and D20 are, with most of the changes being cosmetic, or a modest increase or decrease in detail/complexity.
I did understand the resentment the FRP end felt as ICE devoted it's attention to re-doing the core RM2 books. Though I know there is new material in there an RMFRPer might like, it's mostly a re-do of RM2 books they already own and perhaps are disclined to re-purchase. . .which created a long gap of waiting for anything they wanted to buy. On the other hand, starting with the Combat Companion, it seems to be all new material usable with both systems.
It just strikes me as an odd point to start poking for new RMFRP stuff, just after something RMFRPers could use was just released this month.