I agree with everyone, especially regarding the WCS. PAR is the majority(60%), but also that is made up several components, and each component carries a specific weight.
In previous yrs the components were:
SAT
CGPA
Class rank
School profile (% go Ivy, 4 yr Private, 4 yr IS, 2 yr, and workforce)
The reason class rank and school profile are included is due to they need to equal out the cgpa on the same playing field. For example one candidate may have a lower cgpa and be top 15%, but when they look at the school profile they see that the school does not hand out A's like candy, with many going to an Ivy. The other candidate may have a much higher cgpa, lower rank and nobody going to an Ivy, hence the rigor is not as competitive.
They also want the profile because they want to see how many APs are offered along with the grading system. Some schools will give any A a 4.0, others will give an exact number...I .E a 95 is a 3.8 Plus, some schools have a 7 pt scale, and some use 10 pt scale.
Plus, there still is 40% left, and if you max out there you would be very competitive.
I too also would not worry about the view that they may see it as a negative if you apply for every ROTC scholarship. I would add in one more reason they are accustom it. Not every college has ROTC on campus and their intended major. Many dets are being combined, and for some x-town can mean 90 min commute each way. Not every cadet/mid wants to go x-town.
This of course is along with what others have stated, this is not only for rated, but also non-rated slots, such as intel. Every branch has intel. The only question that might be is "You have said you are applying for all 3, they all have different missions, have you thought about how different your life will be in each branch once you commission?"