I think its hard to compare across divisions and nations, Surely 2.4 Blocks in D1 is not the equivalent of 2.4 blocks in D4 or D3 or even D2 for that matter, By comparison my SF who i train out of position playing at PG mostly, avgs 2.4 blocks a game in USA D.3.
I dont think you train SB just to get blocks, IMO its just another number to help aid in the calculation of him stopping something, helps on every shot type and all situations..why wouldnt I try to exploit this obvious lack of SB in the world.
If your going with my reasoning and your big has higher SB then Reb and is still top 4 country wise in REB stats then I think that reinforces the idea that SB will help make up for that lost REB/Make what you have far better.