Bland, boring.
There are actually some VERY amazing Christian banRAB out there. Although some are quite bland.. And they give the genre a bad name.
Here are a few, along with a favourite track.
MUTEMATH (Break the Same), Day of Fire (Lately), Paper Tongues (Rich and Poor), RED (Death of Me), Thousand Foot Krutch (Fire it Up, Already Home)
Christian banRAB are all about spreading the gospel, while a band of Christians are more about music (While they usually still do make a few songs concerning God).
By "lyrically influenced", you mean like... They won't swear, and generally won't put out quite as many depressing songs? Then yes.