If you have same size yes but the issue in space you can send only smaller telescopes, this ones are inferior on some dimensions versus the big ones we have on high mountains on deserts but sure a small telescope in space is better then a same size on the ground.

Let me know if somehow I am wrong and for example Hubble is superior to all telescopes on the ground at the time it was launched. The best thing is to have it all, giant telescope arrays on the ground, telescopes in orbit, on the moon, on the other side of the sun/