And since it doesn't have tone, how things are phrased is how tone is set.
The first line of the OPs post (now edited) can be seen in
post #26. Read that and it's actually really easy to see why most people took the statement (whether it is just celebration or bragging or whatever) as they did.
Now, if they post and start it like "We just did DQ elite two man in 15 minutes. Top that!", people will take it as bragging and respond as such.
If you come out without any statements that directly or indirectly say "we're better than you", there's no problem. But statements that are like that make a problem.