I have the Ultimate edition of GMS and I still use Construct 2.
With any software, especially game making software, there are pluses and minuses.
The big pluses for C2 for me are:
simplicity of use,
the online tutorials,
the templates and examples built into the software,
the event sheet system makes finding problems much easier,
the people in the forum seem to be eager to help newbies.
C2's team is constantly upgrading and improving the software,
so any limitations that C2 has today, may be resolved tomorrow.