Sander said:
Equipment can't be a substitute for skill, but equipment definitely determines the type of sound you get out of an instrument.
Since you are the only one in this thread with well constructed sentences, I will respond to the thread topic via your quote.
I agree with the above statement, but I believe it requires more explanation. Certain types of music requires equipment tailored for its sound. For example, modern rock and metal music has various types of sub-genres and playstyles that require amplifiers to produce certain types of tones and distortion.
If you wanted to play Stoner Rock, you have to be able to handle your equipment. A novice with experience with the equipment needed and the specific play-style will be able to play Holy Mountain or (Better) than a virtuoso classical player sporting an unmodified Stratocaster on the clean channel. The notes might be played more accurately by the virtuoso, but the ability to emote and understand the song "Therefore, improvise and make musical sense of the sound" will be in the hands of the novice.
Skill is needed more than anything to be able to be considered a good guitarist, but skill in "what" areas is the specific question that needs to be answered.
Above all, the quality of music produced by a guitar is the ability for the player to emote and communicate effectively through their equipment, rather than be technically proficient.
This causes the player to question themselves before buying equipment. It is an unpopular philosophy, since most people like instant gratification and an answer that reflects the decisions of other peoples experiences that aren't their own.
So, everyone in this thread, ignore my above post and do what you want.