The ZT 0620 uses a heavier blade stock that the Grip, but it is more pointy point (side profile, not top down along the spine) than the Grip tanto, making it excellent for fine detail cutting, but poor for prying.
If the ZT has the Elmax blade, it will be very tough. Elmax is probably the toughest stainless steel going. It's tougher than 154CM, although heat treat will have to be factored in.
Batoning with a folder requires precise technique. And wood is funny. Grains shift and turn. Hidden knots or buried branch fragments can cause havoc. I've chopped branches with a folder without problems, but then I hit a branch with twisted grain, and the edge rolls or chips. Without knowing the technique you used or the hidden factor in the particular wood, it's hard to blame ZT. Although, you can be dang proud of that Grip.
If the ZT has the Elmax blade, it will be very tough. Elmax is probably the toughest stainless steel going. It's tougher than 154CM, although heat treat will have to be factored in.
Batoning with a folder requires precise technique. And wood is funny. Grains shift and turn. Hidden knots or buried branch fragments can cause havoc. I've chopped branches with a folder without problems, but then I hit a branch with twisted grain, and the edge rolls or chips. Without knowing the technique you used or the hidden factor in the particular wood, it's hard to blame ZT. Although, you can be dang proud of that Grip.