I saw on knifetests.com a Scrapper 6 (SR-77) and a Busse FFBM (INFI) tested in the same way. Both of them passed the destruction test entirely, but while chopping into concrete the scrapper first rolled, then chipped on the edge. The Battle Mistress had almost no damage on the edge at the end (only some evasive denting) and its edge was intact and usable also at the end of the entire test. The S6 edge also rolled badly at metal-against-metal test. Of course, the blade size and geometry might have influenced the test, but anyway, the INFI blade kept its edge not only when cutting, but also when abused in the hardest way possible. No visible rolls and no chipping at all.

I think the most important difference between the two steels is that INFI never chips (at a normal environment temperature) whatever you do to it and it might be also more resistant to deforming (rolling, dulling etc.) than SR-77, as can be observed in that test. If you ever fall into a desperate situation and need to chop dull things (like concrete), you'll not only have the knife still in one piece with INFI, but you'll also have a still usable cutting edge.

After I badly chipped out the edge of my Fallkniven A2, i was commited to pay any amount of money for a blade which was similar in edge retention but does never chip. So, I picked INFI. It is the only steel I could find which never chips at that hardness of 58-60.