Fitzcarald
[03] Disciple
At 1:25 of this vid, geralt GIs early in the active frames (as evidence by him getting the meter bonus) but only gets the weakest "twist" GI.
I've also seen GIs that trigger near the tail end of the active frames result in the best "butt slide" GI.
This leads me to believe that the level of GI you get is primarily (or solely) based on the attack that you GI. So, to use this Geralt GI as an example, the fact that you can be hit by the first two hits in the string and still get the GI (with meter bonus) by presumably mashing GI during your hit stun frames means you sure as shit ain't getting a lvl3 GI for it.
I've also seen GIs that trigger near the tail end of the active frames result in the best "butt slide" GI.
This leads me to believe that the level of GI you get is primarily (or solely) based on the attack that you GI. So, to use this Geralt GI as an example, the fact that you can be hit by the first two hits in the string and still get the GI (with meter bonus) by presumably mashing GI during your hit stun frames means you sure as shit ain't getting a lvl3 GI for it.