Not quite mathematically correct unless your opponent's dice are perfect. Crack shot cancels one evade. Tractor beam removes 3/8 of one (no focus) or 5/8 (focus). This means, that depending on the situation, you need more than one shot, and maybe three, to equal one crack shot. That's also before accounting for the fact that you've given up at least one hit to get the tractor beam to go off.Removing one agility is like giving the rest of your squad crack shot every turn.
There are, of course, other benefits of it, but getting extra damage beyond what CS gives takes work and is at the very least a much longer chain to get there.
There's currently one pilot that can use Crackshot more than once per game. TB can be used whenever you have a shot, and /D title gives you a shot afterwords with the same ship. One TB Scyk gives you enough points for 4 K fighters, 12-15 red dice firing at one less green die, not too bad. And they can do it more than once.
It's debateable that CS only works once, since in a lot of situations it causes opponents to overspend defense tokens.
There are situations where TB can be effective, as I said, but if it were less cumbersome and more effective than CS, you'd see it more, especially since it works best in exactly the kind of squads that CS works in. I was just pointing out how it compares to crackshot in terms of damage and what is needed to out-perform crackshot. The TIE D title is a unique case where it requires a cannon and other options max out at one damage, so a TB can fit the roll as the both the cheapest and probably won't be giving up that much in terms of trade.
Edited by AlexW