MadFlex V1 - Nice opener with RetVox, a few name disses, nice pointing out 6000 forum posts, girls on his monitor is pretty strong, ending with more RetVox lines is a little redundant but overall a strong verse.
GreenSkullKid V1 - Decent punches with MadFlex and BigRed, then all of a sudden "I'll fuck your sister". Shit's sake, way too much of this totally irrelevant garbage, "pussy faggot wiener gay" is a nice tongue-in-cheek finisher but in the end it's like you're flipping your own verse.
MadFlex V2 - Goes right on the offensive with all of the sex jokes. Macking pussy/tracking cookies is exquisite and brilliantly creative. Delivery on 'filthy whore just like her' is positively venomous. A lot of the following bars are 'copied all his last flow with no repeating' - if I were GreenSkull I would have flipped this so hard. Seems like there's not a whole lot of research going on here which brings the verse down. However, lost hopscotching lunatic/ruined it/move it bitch is a totally awesome finisher.
GreenSkull V2 - Decent filler, I like the metaphors, punches and flow change-ups but this verse is all filler.
Overall you guys both have great delivery but MadFlex attacks way way more. MadFlex to advance.