Two is better than one, and being an All American athlete probably wasn't going to happen in a year.
But seriously, My answer is based on this report Rand report
http://www.rand.org/content/dam/rand/pubs/research_reports/RR700/RR723/RAND_RR723.pdf around page 10. It shows the WCS calculation used in the late 1990's. Yes the information is dated, almost 20 years old, but it is the best Published information that I have seen. I am sure the scoring has changed. I am sure it will be different for each SA. But I would bet that it is similar and what we do have in this report gives a great insite into what the SA is looking for.
Below is from the report:
Athletic Activity Level Points
An outstanding athlete (All-American, 1st team All-Area selection in baseball/softball, basketball, or football) and athletic rating of either 1 or 2 in the sport in which honors are received or a CFA score greater than 650. 800 Points
1st team All-Area selection in a single sport (other than baseball/softball, basketball, or football). Captain of baseball/softball, basketball or football team. Team captain in two or more sports (other than baseball/softball, basketball, or football, for class size over 100). 700 Points
Captain of team (other than baseball/softball, basketball, or football). Varsity letter in baseball/softball, basketball or football. Varsity letter in two or more sports (other than baseball/softball, basketball, or football). 600
Varsity letter in a single sport (other than baseball/softball, basketball, or football). 500 Points
Participation in varsity sport without a letter. 400 Points
Participation in junior-varsity and other team sports (excluding intramurals). 300 Points
Candidates with no participation and no evidence of interest in sports. 200 Points
That Rand report also is why I believe Boy's State is important.