Never underestimate the turnfighting ability of an I-215 loaded with Aerodynamics Expert and Lightweight Power unit.
The Yak multiroles are not, in the words of a certain forumer 'basically just giant sniping platforms'. It is an extremely capable and powerful plane. Sure, the guns have long range, but it always comes down to turnfighting. As I said before, the yak multiroles have just enough maneuverability to match most other planes in the same tier. At the same time, the long gun range means no one-- not even heavy fighters can escape. It also has decent survivability for its class, and can take on quite a beating and a few fires. It's kind of a surprise that not that many humans fly them.