Yes, I understand the scoring system and have posted an explanation earlier myself.
If we say have a hypothetical situation where its Layton, Ellie, Nigel, Bobby and Angela S left in week 10 and their position on the leaderboard is Layton at the top, Ellie and Nigel second with Bobby and Angela next but public vote in order of popularity is Ellie, Nigel, Bobby, Angela and Layton, then we could have the following scenario:
Layton 5+1 =6
Ellie 4 + 5 = 9
Nigel 4 + 4 = 8
Bobby 3 + 3 = 6
Angela 2 + 2 = 4
Although Bobby is further down the leaderboard, the public vote takes priority so Layron would be in the dance off with Angela.
Anyway, this is all conjecture a d I might be miles off with who is more popular than whom!