[3 card odds-confused]

I confused about what I read about these odds.

 

I recall that the ante bet alone has a house vantage of about 3.4%

I recall reading that pair plus has a house advantage of 7.3% 

Then read that playing the pair plus with straight bets leads to a House advantage of about 2.3%.

 

it seems this should result in a number somewhere between 3.4 and 7.3%. I don’t understand how it goes down to 2.3%.

 

I have avoided this bet due to do the 7.4% house advantage, but have become uncertain due to the figures stated above.

 

Six card bonus seems like a sucker but anyway you cut it.