If they were coin flips so that you had a 50-50 chance of heads on each flip, then I think it would be a 6.25% chance of getting 4 heads out of 4 flips versus a 5.47% chance of getting 8 or 9 or 10 heads out of 10 flips.
With 4 flips, there are 16 possibilities, so the 1 with 4 heads would have a 1/16 chance of happening.
If there were 10 flips, then there are 1024 possibilities. There are 45 ways to get 8 heads, 10 ways to get 9 heads, and 1 way to get 10 heads, giving a 56/1024 chance of 8, 9 or 10.
I think.