She appears in over 6 panels and speaks - how is that a cameo? Unless your saying part 5 came out before issue 2.
Panel count doesn't count if you can barely see a character and they are just sitting off to the side. Her speaking part was one minor speech ballon - you are really digging for something to say this is the first appearance.
So you probably think ASM #1 is the first appearance of Cindy Moon (silk) - instead of #4 - modern example
You probably think FF67 is the first full appearance of Warlock - silver example
I could go on and on - collectors, and readers will determine which is Key. Either way I don't see "Daisy Johnson" as a character to hold long term collectability either way.
Just warning those who go invest in modern books during this craze. Do your research. If I had #2 and #5 side by side, I would always read #5 first, invest and or collect in it as well.....won't be doing either but just saying.
Seriously you are the one stretching here. Its not just wikiepedia but many and I mean many other websites that have her first appearance as 2 not 5. Keep on hoping that 5 came out before 2 but that is just not the case. 2 is her first appearance sorry you have more 5's in your stash than 2's. Nice try though trying to convince people on here. (thumbs u
Here is a fast search of just a few sites that have her first app as Secret War #2
comicvine.com
marvel.wikia.com
bleedingcool.com
comicsheatingup.net
comicbookrealm.com
crossgencomicsdatabase.wikia.com