@C7TJFVB7-CAZ dont laught so much, some of the things you said are also laughable, before making jokes you should read what has been commented in the thread because it looks there are some details you are not getting
Without further info of the conditions where that screenshot was taken... the only thing that proves that screencapture is that you have a problem in CELL

As mentioned before it doesnt matters how many hours you was playing, what matters is if the values was "captured" when the temperatures was at one of the "heat peaks" because this "heat peaks" represents the max
Otherway, if you take a screenshot in a random point of the game (or after quitting the game), or before the PS3 has warmed up... what you see in screen is not realistic
Are you sure the values in your screenshot was realistic ?... because if you are not sure doesnt means anything, it will make you feel better like a placebo but is not real
EDIT: Ok found good thread
http://www.psx-place.com/threads/holes-on-ps3.13232/
Maybe best mod is to make current holes bigger to get better airflow
Most of that holes are a bit "blocked", remove the top cover of the case (with all other parts in place) and see how much "holes" you see
You have been cleaning up the PS3 from dust... but this can be seen better when there is dust, by looking at where the dust is cummulated you can deduce how the air moves
The holes from the perimeter that has a better airflow intake are the ones closer to the fan, specially in the front (under that 2 metal pieces for the wifi/bt antennas), this area allows to pass the air very well, so the PS3 "sucks" air from here very well
At the other side of the front is the bluray drive (so there are no more holes in the front)
The right border is half blocked by the bluray drive too, it has holes all along the right line and works (you will find dust in them, in the same amount than the left side). At right-back there is an empty area though, but is too far away from the fan
And left border is mostly blocked too, im looking at my PS3 right now to see how many dust has been cmmulated (after 3 years of use or so without opening) and i think left border and right borders has the same amount of dust. So yeah... all that holes at the border are working as intended, but is a bit "meh"
And... is not worthy to make bigger holes at the sides, is hard to explain why im saying this (is needed a drawing to explain it)... but by looking at them i can see is not so easy (everything depends of how you make them of course, lol). The point is... to make the holes at the sides bigger you are going to need to remove lot of plastic (probably more than you think right now), and imo is not going to have an aceptable finishing
The holes at the front are a different history though, hmmm... i never thought in this but looks like a good idea
And are different than the holes at the sides (this is another thing hard to explain, needs a drawing), and im realizing right now that allows to make them bigger (by removing only a bit of plastic and doing it in a easy way)
Actually... im thinking in the metal pieces of the antennas located exactly over this holes and are blocking a bit the airflow, i guess moving that metal plates antennas to other place (or rotating them) could have a good effect
But if you decide to do this keep in mind the geometrical shape of that metal plate antennas should not be changed ! (so dont bend them, and dont crop/saw them)
The geometry of the antenna is what creates the wireless waves... by changing them you could decrease the wireless intensity or frequency, and is going to have problems connecting wireless to wifi/bt