When (if ever) is grab to charge shot guaranteed?

[Theftz22]

I'm thinking particularly vs marth, sheik, falco, and fox. In my experience, if marth or sheik DI a dthrow in at like 30-60 or so, you can get a charge shot. Or if they DI a dthrow out at like >70 you can get a charge shot. Falco and fox can be charge shot off an upthrow if they DI fully right or left at higher percents I believe. This is all rough intuition. Does anyone know actual percentages and DI-dependence for grab-charge shot combos?

 

[JerkPhil]

I don't know the exact %, but I use it only against fastfallers (low-high % after Uthrow) and Puff (mid-high % after Dthrow).

 

[343]

I should go into 20xx and test this >_> it seems to work on Peach at high% after dthrow, and I feel like it should work on Sheik at mid-high% after dthrow as well (all dthrow -> grounded charge shots here?) Marth seems to be able to jump out, though, but you can maybe read that jump(?)

 

[BillNyeTheSamusGuy]

Not that you should let this happen, but I'm pretty sure dthrow->chargeshot is guaranteed on fastfallers when you get them around 170-200%, and/or earlier if you catch them di'ing up.