You can see note durations (quarter notes, eighth notes, etc.) and rests, ensuring you play in time.
The biggest failing of text tabs is the inability to convey rhythm accurately. Guitar Pro Tabs
They bridge the gap between "reading music" and "listening to music." They give you the control of a recording studio (mute, solo, loop, slow down) with the portability of a PDF. You can see note durations (quarter notes, eighth notes, etc