Getting logos to line up properly is one of the hardest things in slide design. I have not been able to come up with a set of rules to do it, every time I need to eye ball things to see whether things somehow look right. Below is an example from the 9xchange web site:
There are a number of (conflicting) inputs:
- The middle of the image file
- The typographical baseline of the text
- The middle of the non-text part of the logo
- Tag lines above or below the brand name
Always fine tune logo pages because any automated adjustment will for sure not get it right.