player to player. Also, the college player to NBA player comparisons are inherently flawed because with college players we are essentially talking about endorsement deals that may be facilitated by teams but aren't contractually binding between players and the team they play for (thus the wild-west mentality behind these deals), and with NBA players we are talking about collective bargaining agreements, salary caps, contracts to play for a certain team for a set number of years, etc. That's a very different situation than players being able to move every single year on a whim and holding their teams hostage every single off-season based on what sort of deal they can get. In the NBA it's also players being paid out of a percentage of the profits that the team/league earns in revenue whereas in college the players get NONE of that profit and this payment is coming from donations from local boosters of the program.

If you want college basketball players to be paid "fairly" compared to the NBA, then you need to start pushing for the players to be salaried employees of the school with all the strings that are attached to said contracts (likely determined via collective bargaining by a college players union of sorts).