I believe that the Vikhr has considerable launch constraints. The missile goes ballistic if it can’t find the laser beam early in its flight, before the beam spreads out (hence the depressible launchers). In addition if the launch platform moves laterally the missile will no longer be in between the launcher and the target (and out of the beam).

As far as I know the Vikhr has very few launch constraints and a rather high hit probability out to 10km. In normal operation against ground vehicles it has an impact fuze, while when used in the air to air role it has a proximity fuse with a range of up to 5m. When fired from 10km range there should not be much need to manouver too much… and of course weapons like wire guided TOW and HOT would also make manouvering impossible for the launch platform… the main reason that most western helos had the standard launch practise of hovering… a tactic that has proved very dangerous in real combat situations.