I remember an old article stating that the touch pad would be used for more casual games on PS4. (n4g.com)
In game the difference between a membrane board and a mechanical one is notable, although more casual gamers probably wouldn't notice of a difference. (wolfsgamingblog.com)
The difficulty may be too tough for more casual gamers, but anytime you die it is always down to player error rather than glitches or the game just being unfair. (xboxenthusiast.com)