Lies, damned lies and statistics huh!
The law according to sod dictates that 28 extra inbounds in a 14 hour period does not equate to 2 extra inbounds per hour. It equals 7 extra inbounds during each of your 4 busiest periods.

Also you cant just discount the outbounds cos theyve got to get on the runway at some point, thereby affecting your inbounds.
Edited to ask brainfade. So when you are no.2,3 etc in the sequence at pf and offered a visual approach,who decides on your spacing against the traffic in front? If the controller asked you for a specific gap against the traffic in front, would you adhere to it?