Cons don't need to be even with grens. Squad wipes for grens have only gotten worse since the patch, a problem soviet players don't have to deal with on nearly the same level. Cons vs Grens is balanced.
Because squad wipes happen 24/7...... Russians do have squad wipe problems (mainly from mortars and brumbars) but that is beside the point.
Many people including from Relic have said you need 2 conscripts for every one gren. That in it self is fine, but then why do 2 conscripts cost 480mp vs the 240 for the grens. I (and I guess many others) are fine with conscripts being inferior to Grens but the price needs to reflect that.