Legends of Tomorrow S01Ep6: 61 year old Oliver Queen

Yes I know, some of us have not come to like this new series that feautures the time master RIP hunter, hawk girl, Ray Palmer the atom, Sarah the white canary, Jefferson and Professor Stein that make up firestorm, Hawkman who is now dead, snart and his ice gun the captain cold and mick the heat wave. Oh let's not forget Gideon the artificial intelligence who has been really helpful. They have all teamed up to defeat Vandall Savage who conquers the world later in the future so they try to stop him in the past to avoid this future but somehow end up altering the timeline with greater consequences each time they try.
In this episode, they crash land in 2046 in star city with the place in chaos and desserted, just as they come in Ray sees Palmer technologies building now SMOAK technologies named after Felicity. They get challenged by the green arrow, Ray tries to explain but he fires at them then they realise he is not Oliver Queen.

With time he trusts them and they need his help to get a piece of  technology to facilitate repair their time travel ship but he tells them the place has been desserted and everything has been moved somewhere else. He takes them to the Green Arrow's lair but the place is scattered, There they meet Oliver with one arm who everyone presumes dead , he tells them to leave and blames everything that happened on the atom and white canary for abandoning them. He says if they were around they would have had a fighting chance. We find out that the new green arrow is Diggle's son connor and every other person is dead except for oliver who has giving up on living.

Oliver with one arm

We can see the resemblance

Who is causing this chaos? Deathstroke!! but this time its Slade Wilson's son who is revenging for what was done to his father the real Deathstroke.

Deathstroke-Slade Wilson's son

On the ship Ray and Jefferson both compete for Hawkgirl but she tells Ray her life is too complicated to let love in at the moment. Meanwhile Mick is loving this new home because of the chaos and refuses to return with the rest but snart tries to persuade him to no avail then he knocks him out. They all return to ship ready to leave but Sarah  says she wants to help her city, RIP hunter tries to explain that it is a temporary timeline and they can change it if they return to the past but she insists she wants to stay to help since there is a death warrant on connor the green arrow. RIP hunter gives her one hour and they will leave without her after then. Alone on this mission she goes to meet Oliver and persuades him to help and he puts on his armour including a bionic arm. They arrive just in time to save connor from his execution and we see the 61 year old Oliver in action. Here he  is looking very much like the bearded Green Arrow comic character.

Bearded Green Arrow of DC comics

Oliver at age 61 still kicking ass

  Sarah's time elapses but RIP hunter is persuaded to take the team and help out and they arrive just in time as Sarah and Oliver are surrounded. Deathstroke is killed and they return back to their ship for departure .
Star city was defeated 15 years ago by deathstroke, let's assume he is 30 years old at most from the picture, did he defeat Oliver and all of star city at age 15? Also, Connor should be way older than that unless he gave birth to him very much later and Jefferson is young to be wooing hawkgirl. share your thoughts on this......