Stat-padding isn't allowed by EA (check their ToS).

BF4DB doesn't ban people for stat-padding but if our site bot detects stats that are abnormal (insane hspk ratio mostly), you'll be banned automatically.

If you find yourself banned for suspicious stats and have evidence that those are due to stat-padding you may appeal and be cleared.

But between you and me stat padding is a very dumb thing to do. IF you want to do it, don't aim for the head at least, that'll avoid issues with us, EA and most servers that use stat bot.