I'm right there with you - I have lots of experience playing songs on piano with just lyrics + chords, and I use all kinds of inverted chords without even thinking about it. "Reading" the keyboard is much easier than reading the fretboard.
One other thing that makes it harder on guitar is that the chords that are easy to play are often various inversions, so your "A" chord might actually be a first or second inversion. I'm still just learning movable shapes on the guitar, and getting the fingerings right is tricky as things grow and shrink moving up and down the fretboard, something that also isn't a problem with keyboards.
One other thing that makes it harder on guitar is that the chords that are easy to play are often various inversions, so your "A" chord might actually be a first or second inversion. I'm still just learning movable shapes on the guitar, and getting the fingerings right is tricky as things grow and shrink moving up and down the fretboard, something that also isn't a problem with keyboards.