That being said, myself and Isabella tested out if my Imp. counter spelling would do anything when countering spells.
She tried casting a level 6 Bigby at me. Now, normally.. counter spelling should let me counter either with the same spell, or a dispell(?). Improved counter spelling, should take a spell from the same school as the one cast at me (Evocation) one level higher from that spell (So level 7). I have all Bigby spells, so I got evocation on 5,6,7,8,9.
However, when she cast it, it instead chose to use my mordenkain disjunction to counter it. Plus, even when I beat the spellcraft check, the hand would still get summoned.
It should be mentioned that it however seem to work just fine against NPC-bosses trying to mords the player. No issue there. In Pvp tho' it does not appear to be working.
Thank you for your time! Keep up the good work