Should i be using the matching criteria differently for micro vs. mid-tier influencers?

i’ve been thinking about influencer tiers a lot lately, and i wonder if my matching strategy is wrong.

when i search for mid-tier influencers (like 100k-500k followers), i tend to look for those who’ve already worked with big international brands—success indicators are pretty clear. but when i search for micro-influencers (under 100k), i often can’t find that proven track record. so i end up just looking at engagement metrics and hoping they’re reliable.

the thing is, micro-influencers might actually be better for cross-market campaigns in some ways. their communities are tighter and more engaged. they’re often more willing to work closely with brands to get the message right. but how do i actually evaluate them without a portfolio full of international work?

i’m wondering if the matching criteria should be completely different. like, for micro-influencers, maybe i should be looking at:

  • niche expertise (do they really know their category?)
  • community sentiment (are they authentic to their audience?)
  • willingness to collaborate (are they responsive? do they ask good questions?)

instead of:

  • previous brand partnerships
  • reach
  • audience size

has anyone else struggled with this? how do you evaluate micro-influencers for cross-market campaigns when they might not have the portfolio of a mid-tier creator?