Steve doesn't track the same guitar, especially when playing the same chordal pattern. You can get a much wider stereo image if you track two different sounding guitars, such as a Les Paul and a Telecaster. When you hard pan the two guitars it will make your mix sound wider and therefore have more depth.
Tracking the same guitar for both parts would create what I call 'wide mono', as the same guitar is on both sides.
If you only have one guitar use different chord inversions, play the chords in a different register, change the pickup selector (if it's possible), detune the guitar and use a capo.
Paying careful attention to how you track the guitars will give you a wider stereo image in your end result.
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