
All options that require dropping shield are -7 in addition to the startup of the option.A total of 4 frames from when he can act out of shield.

Jump-Canceled up b out of shield, after 1 frame of jumpsquat being interrupted is intangible on frame 3.Mario’s jumpsquat is 5 frames, so a jump aerial is hit by up tilt.Grab is frame 6 and gets hit by up tilt.Spot dodge is intangible on frame 3, he can avoid the hit, and will have +1 frame advantage on Fox.Both of Mario’s rolls are intangible on frame 4, he gets hit by up tilt.For the sake of discussion, I won’t factor in shield pushback or optimal spacing, though those should be kept in mind. Lets say the Fox is going to up tilt after hitting a Mario’s shield with an autocancel bair. Otherwise, they must deal with shield drop lag. The person in shield can only use the four out of shield options at the same time as Fox can perform any action unless the bair was perfect shielded. Shield stun wears off and the shielder can perform an input at the same time as the fox. Using Ruben’s calculator Fox’s auto cancel bair has 0 frame advantage. Knowing this, lets see what happens when fox perfectly auto-cancels a back-air on shield


When someone does decide to shield and they do not perfect shield, they are either committing at least 18 frames to shielding, or performing an out of shield option.
