63 degree head angle MUST be a mistake. I don't think it's even possible to have a 73.5* seat angle and 63* head angle...
I proper XC bike should be in the 66-68* head angle and 75-76* seat angle or steeper like Scott Spark have 77* seat angle. Some people might prefer a little older school geometry and there are more Chiner frames around with 69* head angle and 74* seat angle. That would not be my choice as I use an XC bike more like a 'down country'/trail bike if it has proper geo with good reach like an Epic Evo or Scott Spark. If you don't care that much or only race then the older school geometry could work just fine. But the bike on the OP post seems way off to me.
