Not really.Man that frame is small.
I've explained this in detail before - when you have a 62.9 (stock) HA, the reach/stack numbers are always going to be smaller while the WB numbers will be bigger. Look at the geo chart for a '13 Gambler for a fair comparison, similarly slack head angle. The WB on my L measures 47.8" currently - longer than the L version of your frame.
Also four sizes don't mean that the range of sizing changed, it just means there's more granularity. If you ride an L in other bikes you'd probably ride an XL undead. However now there are more choices in the middle - good for people like me who were always between M and L.
You're correct - the amount of pressure and position of BO adjuster both affect the progression (albeit slightly differently). However the bike pops really well in stock guise with the recommended pressure, if you drop the pressure to minimum you tend to reduce that a bit too. Try both if you want, but I think most people have found that 145-150 is ideal. As I said, I'll be removing my BV soon (and revalving to compensate) to keep the pop and kill the position sensitivity - there's potential for better square edged performance over the stock shock. It would be a similar story in any modern progressive EOS frame.Running 140 of BV pressure then means that you've made it more progressive than the stock recommended 130 - is that correct, or does it not get "used" because you've not engaged the btm out knob at all?