Review on Whiteside Router Bits D10 55 Dovetail by Jeff Jordan

I used a D10-55 bit to make six vanity drawers. They are maple (3/4" x 3 ¼") and machined on an Incra router table with LS positioner, 3.25 hp porter cable. Motor and milling lift Incra. I finished cutting the tails (3 per box end / 12 ends). I started cutting the pins and after cutting 5 (2 pins per box end / 2.5 ends) both carbides broke off the bit. The chisel did not feel hot and the feed rate was acceptable for the entire job. Now my challenge is to try to complete the boxes (1/2 done) with one more beat. Will the depth of cut of a narrow kerf be the same or even compatible? Suppose I'm not happy? I had hoped that Whiteside would offer an "American" alternative to Freud's Fragments. Probably no.