Another example of this sort of rule is Homing Missiles which states:

The defender cannot spend evade tokens during this attack.

This is sort of similar as it specifically states what evade results are not affected and which ones are affected. You can use evade rolls on your defense dice against a Homing Missile, but not an evade token.

So Ten Numb's ability is kind of the other way around, you lose one of your evade rolls if you try to cancel a critical but you still have evade tokens. Of course you have to cancel hits first before criticals.

Y'know what's really unpleasant?

Ten Numb // Marksmanship / Sensor Jammer

Opposing players have two choices. They can either focus to get all the hits they can out of every time they attack Ten, or they can choose Evade to block any pushed critical hits Ten is going to force on to his targets. Add Stealth Device or a Shield Upgrade to Ten to further help his abilities, stick him with a pair of X-Wings or B-Wings, and watch the carnage.

Frankly as an Imperial player I wonder when we're going to see similar astounding toys and combos for our lists. The shuttle is okay but not a brawler, and the TIE Bomber is highly specialized. We need TIE Defender, the systems-upgrade using missile-throwing expensive fighter of the empire to pound the rebellion into submission!

I like that config of Ten.

Pair him with Biggs with R2-D2 and Wedge with PtL and R2 and you have a serious hard hitting squad that isn't necessarily light on abilities and still has a lot of hard hitting power after Biggs is dead.

Biggs escorting a couple of B-Wings - absolutely deadly! Completely negates their poor Agility for a couple of rounds.

ok so why not let the a-wings shine as escort for nubb? hell they were made for this tycho with ptl and homing missiles? and a gsl with assault missiles? could be deadly. as for the dice result I agree with the quorum here evade tokens are not die results. and when you spend a token you do not change a die result. like you do with focus tokens. so an evade can be used to cancel a crit. but when? I do think that you spend evade tokens AFTER you negate hits with the dice and any hits then not resolved can be resolved using the evade token as the example in the book shows. they add the token after canceling out hits with the dice. maybe I am wrong but in case anyone on any forum I read from earlier on who controls what dice and in what order does the canceling out happen.