As you can see, is there something fishy about this bidding? Why? Why is there no 2,3 place counted as valid?

It is hard to say whether there is any foul play, there and no 50% each. This situation often occurs in the bidding process, it is not something new, as long as the bid evaluation committee determines that the only one is competitive, the result is valid, this is the right given to the evaluation committee by law.

Again, from this chart, the units whose bids were scrapped had fatal stiffness on their bidding documents, so it's just pointless to complain. The only thing you can wonder about is whether the company that won the bid had the same problem, but you're not in the know you don't know, lol, so basically there's no good way for you to overturn the results. Even overturning it won't do you any good.