I'm also skeptical on this one.
Last time i lost this big was when i played with my -19 squad a friendly against Milan in FM07.
My season started 3 days later but no way i could decline the friendly Milan proposed against my newly promoted 2nd division team.
TV sended it out and a top income was the result, but i did loose badly with 1-14.
Playing all day with the new patch as national manager and watching games regular and playing 3 games myself, i found that there are less shots then pre patch.
Last night i quickly played my save from first day with a minor league team after i got the new patch, and also there after 3 games i had less shots then pre patch in games.
If you really have this issue, i would suggest reinstall game and patch.
I think SI had trouble themselfs over the Mac patch yesterday and later they found out the Mac version was not installed correct, maybe you have it also.