RT-AC87U Lan ports difference

In the middle of this page (http://wiki.openwrt.org/toh/asus/rt-ac87u) where the heading is 'Hardware notes', I note that Lan 1 is connected hardware-wise different from Lan 2, 3 and 4.

I am curious to know: Is there any difference, as far as performance/speed is concerned, between a PC connecting to Lan 1 vs. to any one of the other three Lan ports?

Thank you.