Simple, takes a lot longer then normal abilities to come down and unlike normal abilities it's a one hit wounder (or miss) while other abilities keep going.
Also there is a ton of Soviet abilities that you can use in a base sector, for example the underused but powerful IL2 AT bomb strafe in the anti-tank commander
2/10.
Dive bomb comes with recon and/or insta pin.
Ability you talk about does not.
Not to mention the first part which is bs. If you start moving your units 6-7 secos befrore impact they will still die.