He clearly stated that he built loads of mutas just to see his opp build archons that (!) counter mutas. He lost his army, tried to rebuild, but had no macro to support tech switch. So he is asking about whether his initial tactics was correct.
OP,
Starcraft is very tactical. You go into the game with a particular build. Every build has strength and weaknesses. If you are playing some1 who scouted you, figured out your weakness, and is making a counter, you can:
1) switch (adjust, or diminish your strength, but strengthen your weak sides),
2) proceed with build (take advantage of timing and first-mover advantage, aka do it before he can do anything to stop you).
3) You can also take an econ risk, and do suicide attack to do some damage, but only do it when you have strong macro to back it up (aka make him constantly trade, relying on your cost efficiency or income efficiency).
You didn't use either of your options, and lost as a result.
As you probably already figured out, your opponent simply built a counter to your opening. It doesn't mean your opening was wrong, mutas are sometimes viable. It means you scouted wrong (or didn't scout at all), and for w/e bad reason decided to proceed with mutas. Which is also fine, but if you chose to proceed with your build without adjustment, you have to do stupid amounts of damage, or secure enough macro behind it to switch in time. You made every tactical error possible.
You played in the following state of mind "o well, i'll build some mutaz and see what I can do with them". This is a wrong approach, you have to better make decision on what to build based on scouting information. YOur game was a typical low-level double blind, where you play your strat with no regard to what your opp is doing. In this case, buildorder losses are typical.
He clearly stated that he built loads of mutas just to see his opp build archons that (!) counter mutas. He lost his army, tried to rebuild, but had no macro to support tech switch. So he is asking about whether his initial tactics was correct.
If you can build loads of mutas (and let your turtling opponent get 4500 gas of archons), you should definitely have both the map control and gas income to produce more than 4 infestors. Somewhere in there is a serious macro error.
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