Pattern match speed question

Questions
1

If f takes 2 arguments, is either of these pattern match forms faster?

f[x_,___] := expr

or

f[x_,_] := expr
2

Best not to use a BlankNullSequence unless you have to because the pattern matcher will spend forever trying to match anything you throw at it. Not to mention, if 2 args is all f takes, you would need an additional check on the length in order to determine if it has the proper number of arguments.

f[x_, ___] := 1; 
g[x_, _] := 1; 
In[14]:= args = Sequence @@ Range[10^5]; 
In[15]:= Do[f[args], {1000}] // AbsoluteTiming 
Out[15]= {3.135620, Null} 
In[16]:= Do[g[args], {1000}] // AbsoluteTiming 
Out[16]= {1.934412, Null}

-Andy