The iPad Pro M4 13-inch wins decisively with its tandem OLED display reaching 1600 nits peak (per Apple specs) and M4 chip delivering 1.5x the GPU performance of M1 in Metal benchmarks. The iPad Air M1 remains capable for media consumption but trails in brightness and refresh rate compared to the Pro's 120Hz OLED. iPad Pro M4 also supports Apple Pencil Pro hover and advanced audio features abse...