Su-34 over other Flankers

I’ve seen Russian decision to purchase the Su-34 as the replacement for Mig-27s, Su-17s and Su-24s. However what big advantage does the Su-34 have over for example over other Flankers like Su-35/Su-30MKI in the STRIKE role? I mean the Su-35/30MKI have similar range, similar number of hardpoints and a similar payload. Aside from Su-34 having a more A2G radar, what real big advantages does it have over those fully multirole Flankers which can be used in AA role much better and would probably be cheaper to purchase?