This was an interesting point, and it got me curious how the current top 25 has done against other currently ranked teams so far. So, the rankings below are current, not the ranking of the time each team played (e.g., Arizona beat #3 Florida early, but the Gators are no longer ranked).
#1 Arizona | 2-0
W 71-67 at #4 UConn
W 96-75 vs. #13 Alabama (Birmingham, AL)
#2 Michigan | 1-0
W 101-61 vs. #8 Gonzaga (Las Vegas, NV)
#3 Iowa State | 2-0
W 81-58 at #5 Purdue
W 66-62 vs. #19 Iowa
#4 UConn | 3-1
L 67-71 vs. #1 Arizona
W 86-84 vs. #9 BYU (Boston, MA)
W 74-61 vs. #16 Illinois (New York, NY)
W 61-56 at #22 Kansas
#5 Purdue | 2-1
L 58-81 vs. #3 Iowa State
W 87-80 at #13 Alabama
W 86-56 vs. #14 Texas Tech (Nassau, BAH)
#6 Duke | 3-1
W 66-60 at #12 Michigan State
L 81-82 vs. #14 Texas Tech (New York, NY)
W 80-71 vs. #15 Arkansas (Chicago, IL)
W 78-66 vs. #22 Kansas (New York, NY)
#7 Houston | 1-1
W 94-85 vs. #14 Arkansas (Newark, NJ)
L 73-76 vs. #21 Tennessee (Las Vegas, NV)
#8 Gonzaga | 1-1
L 61-101 vs. #2 Michigan (Las Vegas, NV)
W 95-85 vs. #13 Alabama (Las Vegas, NV)
#9 BYU | 0-1
L 84-86 vs. #9 BYU (Boston, MA)
#10 Nebraska | 2-0
W 58-56 vs. #12 Michigan State
W 83-80 at #16 Illinois
#11 Vanderbilt | 2-0
W 88-69 vs. #24 SMU
W 105-93 at #25 UCF
#12 Michigan State | 2-3
L 60-66 vs. #6 Duke
L 56-58 at #10 Nebraska
W 69-66 vs. #15 Arkansas
W 74-58 vs. #17 North Carolina (Fort Myers, FL)
W 71-52 vs. #19 Iowa
#13 Alabama | 1-3
L 75-96 vs. #1 Arizona (Birmingham, AL)
L 80-87 vs. #5 Purdue
L 85-95 vs. #8 Gonzaga (las Vegas, NV)
W 90-86 vs. #16 Illinois (Chicago, IL)
#14 Texas Tech | 1-3
L 56-86 vs. #5 Purdue (Nassau, BAH)
W 82-81 vs. #6 Duke (New York, NY)
L 86-93 vs. #15 Arkansas (Dallas, TX)
L 77-81 at #16 Illinois
#15 Arkansas | 3-3
L 71-80 vs. #6 Duke (Chicago, IL)
L 85-94 vs. #7 Houston (Newark, NJ)
L 66-69 at #12 Michigan State
W 93-86 vs. #14 Texas Tech (Dallas, TX)
W 89-80 vs. #20 Louisville
W 86-75 vs. #21 Tennessee
#16 Illinois | 2-3
L 61-74 vs. #4 UConn (New York, NY)
L 80-83 vs. #10 Nebraska
L 86-90 vs. #13 Alabama (Chicago, IL)
W 81-77 vs. #14 Texas Tech
W 75-62 vs. #21 Tennessee (Nashville, TN)
#17 North Carolina | 1-2
L 58-74 vs. #12 Michigan State (Fort Myers, FL)
W 87-74 vs. #22 Kansas
L 83-97 at #24 SMU
#18 Georgia | 0-0
N/A
#19 Iowa | 0-2
L 62-66 at #3 Iowa State
L 52-71 at #12 Michigan State
#20 Louisville | 0-2
L 80-89 at #15 Arkansas
L 62-83 at #21 Tennessee
#21 Tennessee | 2-3
W 76-73 vs. #7 Houston (Las Vegas, NV)
L 75-86 at #15 Arkansas
L 62-75 vs. #16 Illinois (Nashville, TN)
W 83-62 vs. #20 Louisville
L 76-81 vs. #22 Kansas (Las Vegas, NV)
#22 Kansas | 1-4
L 55-61 vs. #4 UConn
L 66-78 vs. #5 Duke (New York, NY)
L 74-87 at #17 North Carolina
W 81-76 vs. #21 Tennessee (Las Vegas, NV)
L 75-81 at #25 UCF
#23 Virginia | 0-0
N/A
#24 SMU | 1-1
L 69-88 vs. #11 Vanderbilt
W 97-83 vs. #17 North Carolina
#25 UCF | 1-1
L 93-105 vs. #11 Vanderbilt
W 81-75 vs. #22 Kansas
When laid out like that, you can't really justify putting Michigan above Arizona. Don't get me wrong, Michigan looks REALLY good ... but their claim to fame as far as signature wins is Gonzaga, which just simply isn't as impressive as what Arizona has done. BTW, mistakes possible.
A couple top 25 matchups this week that could be added to the list above.
#6 Duke at #20 Louisville
#14 Texas Tech at #7 Houston
#13 Alabama at #11 Vanderbilt
#24 SMU at #6 Duke
#16 Illinois at #19 Iowa
If we win at Iowa, we would (at least for the moment) join UConn, Duke and Arkansas as the only teams in the country with 3 wins vs. the current top 25.