The much venerated Sig P210's were supposed to possess lengendary accuracy. The best accuracy that no one could afford, and Sig just couldn't make enough of them to satisfy demand.
An awkward design, ungainly balanced 9mm with a mediocre trigger, the P210 was always over-rated. And hugely expensive. It's a testament that the X5 outshot it. Sig is just like any other corporation, in that they make (and charge) what the market demands. How many years did GM make the truly horrible #####, S&W made the Sigma, the Springfield XD???
Even with no front barrel bushing the X5 has the advantage, and cheaper. Sig even made a compact P210! Ugh!