TW and BMM both specify that when a 'Mech fails a DFA attack, damage is calculated as if the 'Mech had fallen 2 levels (regardless of attacker/defender elevation), always applied on the rear hit location table.

The standard formula for determining fall damage (of any sort) is 1 * (weight/10, rounded up) * (levels fallen + 1), meaning a 'Mech that falls over from something like a failed 20+ damage PSR would calculate as 1 * (weight/10, rounded up) * (0 + 1). Is my reading of the DFA rules correct in that a failed DFA would calculate as 1 * (weight/10, rounded up) * (2 + 1), or was the "2 level fall" intended to replace the "levels fallen + 1" part of the equation entirely?

The example I ran into tonight involved a Wolverine failing its DFA, which I calculated as 1 * (55/10 = ~6) * (2 + 1) = 18 damage, but I want to be completely sure it wasn't intended to be 1 * (55/10 = ~6) * (2) = 12 damage instead.