i'll take the "if not, why?" part -
the ATC fuse is designed to blow / pop *poof* at a surge of electricity beyond its specified rating.
the wire link however can sustain this surge longer/more is more tolerable of it - i.e. it will not blow immediately.
Say you have high beams on, and the radio, and a blinker, etc - you have some electrical draw going on. Then you turn on something else, say your heater. That surge of the new item coming on may pop your fuse. Where the link would hold thru the surge.
I hope that's a decent example...
try not to die -
- saylor