By the way, I haven't completely tested this, but I'm pretty sure I know why Ray's 212 long pass game and the 122 long pass game of 0.4.0-0.4.2 were such successful exploits, and I'm pretty sure the exploit still exists in 0.4.3.
It all has to do with safety position.
Look at the 212 SE Post:
Now look at every cover 2.
The WR in the 212 and 122 plays travel outside of the SS and FS zones so the safeties never will come over to cover. In the 212 SE Post, the WR then cuts away from the safety zone on either side of the field, leaving the WR in one-on-one coverage. Since WRs have always had the advantage over DBs, and especially have the advantage now in 0.4.3 even with the QB nerfs, this means the WR should win more than half of these battles.
Long story short, if Cover 2 worked, it would have completely negated this exploit in the first effing place and we wouldn't have had to have all these nerfs.