If you use two variables to define the ball's left-right and up-down position, you can simply compare that with the position of the paddles or any other object using IF statements.
If you were using a 5x5 area, I'd define the left-right values as 0 to 6; 0 off the left of the board, 1 to 5 position on the board, 6 off the right of the board, and similar for up-down; 0 off bottom, 6 off top.
You can then add or subtract 1 so the ball moves left or right, up or down, or diagonally. You can choose which to do based upon the value held in another ball direction variable.
To tell if the ball is off the are or has hit something else, you then need to compare the balls co-ordinate variables with the value of what you are checking for. As with the ball, you need to also track where other objects are.
Finally you would urn those tracked objects into suitable images to display on your LED's. You aren't really comparing the LED's but the internal data which says which LED's are on.
If the centre of your left paddle up-down ( also 0-6 is on the far left ( left-right=1 ) and is three LEDE's wide ( one above and one below its centre LED ), you can tell the ball has hit the left paddle using something like ...<code><pre><font size=2 face='Courier'>If ball_LeftRight = 1 Then
If ball_UpDown <= paddle_UpDown+1 And ball_Upown >= paddleUpDown-1 Then
Gosub BallHas HitPaddle
End If
End If </font></pre></code>