How good is the c4 e5?

especially the reverse dragon

What? Black is not down a tempo and certainly not losing. how did you get that idea?!

as you can see..White Fiachento bishop has a niceeee diagonal destroying blacks pieces while black have some bad pieces.And please dont spam this indonesian/Poland man

Black doesnt have bad pieces, he has a comfortable position after for example:

I dont see why Black would have a bad position.

I play it like a reversed closed sicilian.

That is a well-respected opening! Check out this link with info on the best openings: http://chesswinning.com/10-best-chess-openings/

The November 2017 issue of Chess lists the top twenty openings compiled from a list of 2402 September games where both players were rated over 2400 Elo. One can not take position on this list too seriously because it is greatly influenced by how the openings are grouped. For example, all the Retis are grouped together, while English is separated into 1...c5, 1...e5, etc. Nevertheless, for what it is worth, some of the list entries are: 126 Retis, 100 King's Indians, 97 Nimzo-Indians, 84 Caro-Kanns, 76 declined Queen's Gambits, 73 Slavs, 63 Catalans, 61 Najdorf Sicilians, 58 1...c5 Englishes, 55 Berlin Lopezes, 55 Queen's Indians, 49 Guioco Pianos, 48 1...e5 Englishes, 45 Kan Sicilians, 43 1...Nf6 Englishes, and 42 Taimanov Sicilians.

if we follow your logic, we could tell that white can find many move orders to play a black's defence tempo up so should win...

But tempo up is not enough u know...