Play the song alongside it, it's definitely the band.
Point 1). There are no natural harmonics played at 2:30, in the originel band version The Edges plays harmonics and a basic chord
Point 2). There is no riff change at 3:04, in the originel band version The Edges plays the echo riff then changes to chord this it where Bono sings 'Ooooo oooo o oooo'
Point 3). The Edge use's a sustain guitar on the song, with a slight echo and shimmer. On this video it sonds more like a keyboard synth with slight reverb and little echo.