Anyone who thinks Shield Lob is worthless is a bad player. =P

Shield Lob is a good way to say "This is the target you guys should be focusing on first! hit him prease!! NOT THAT GUY!!!! FINE, YOU TANK THAT GUY! >.<"

PS: Don't try to learn too much from tanks who are leveling up. Chances are, they are still learning themselves.
If you want to learn from example, watch what tanks do in the new Amdapoor.