No, thats not what Im saying.
I am saying the level of investment necessary to be better than Dresden in his own specialty is probably unwise, compared to simply bringing him and Mouse along.
You can have your primary focus be a swordfighter, or firearms, or controlling a swarm of minions from afar, or sorcery, or crafting; it doesnt matter. You cant just neglect minimum investment into other fields or you will be caught mother naked by surprises; being the baddest crafter in the world wont help you if you take a bullet and didnt take any combat charms.
Dresden carries a pistol into combat along with his magic paraphernalia and melee weapons for a reason, after all.
We can match Dresden. Overmatch him, even. But you will not be as good at something as someone whose primary investment is in that area.Not without similar levels of investment or higher.
And that costs XP.
Going from Perception 2, Investigation 0 to (guessing at Dresdens Perception + Investigation dicepool here) Per 3 + Investigation 4/5 + various Background bonus dice will require us to, at the minimum, expend upwards of 30XP just to match his dice pool.
Now I have no objection to spending 9 XP for Investigation 2 and an Investigation Excellency, once we have other things done.
But 30XP+ is not a reasonable expense at this juncture.
Bring Dresden or spend XP on applicable Allies to do the heavylifting.