Some questions about nitaku

Yep.

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">1. Would I be correct in saying if the defending player hasn't mastered the art of fuzzy guarding, he could be put in a nitaku situation as little as -3 (assuming 11f punch vs 14f mid)?</div></div>
Yep.

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">2. Why would you use ever use either a standing punch or a crouch to counter an expected throw attempt when a low punch puts you in the crouch position straight away (i.e is effective past -6) and also won't clash?</div></div>
If you anticipate a throw attempt a single action to punish it as greatly as possible, then that action would really depend on your character of choice.

In general terms, a crouch (or crouch dash) would result in a throw miss, and if you're fast enough you can punish with 17f move like a knee for a good combo.

A standing punch, for some characters, can lead into a canned series and more attacking options.

A low punch, while it may be easier to execute and likely to be more successful (i.e. won't clash), probably represents the least rewarding option against a throw.

I wouldn't personally advocate any one of those over the other. Ideally, I guess you should choose the right amount of risk/reward to fit both your character, your opponent and the "situation" (amount of health left, ring position, etc, etc).

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">3. If you then learn how to fuzzy guard, would I be right in saying you then can't be put into a nitaku situation until -7 and worse? Would you use FG as often as possible -3~-7?</div></div>
Just a correction -- fuzzy only works up to -6, but otherwise you would be correct.

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">4. At what point does TEG/ETEG become practical/worthwhile?</div></div>
IMO, as soon as fuzzy guard ceases to work. So at -7 or worse.

Good questions.