Sobis struck in the sixth minute with a long-range effort that skidded beyond the flailing arms of Esteban Dreer.
The team should be congratulated for the way we played and used our intelligence," Sobis told Fox Sports.
Braga coached Sobis when the pair were at Internacionale together five years ago, winning the Fifa World Club Championship after beating Barcelona in the final.
Sobis made headlines when he joined Al Jazira four seasons ago in the biggest football deal in the history of the UAE, but he failed to meet expectations and his career was marred by injuries.
Early in the second half Michel did well to thwart Sobis at his feet as he tried to round the keeper after running onto a superb through ball from left back Kleber.
Sobis equalised in the 61st minute from another fine attack by Kleber, reaching the defender's low cross from the left to poke it past the goalkeeper into the net.
Attacking midfielder Xisco has also come into the team in the past three games, and with the former Valencia man, Edu and Sobis working together, Betis can start moving away from the bottom.
Tinga was influential in the third on the 52nd minute by putting Sobis free onside down the right, who instead of crossing to the advancing Alecsandro laid it back to Andre Alessandro who had time to blaze his effort off the right post past Sung Ryong-jung.
Roth -- after having coached club sides in Kuwait, Qatar and Saudi Arabia -- had a stint here in the UAE with Al Ahli in 1996 while Sobis played on this very ground for nearly two seasons while Barbosa signed for Al Wahda a few years back.
Internacional beat Guadalajara of Mexico 3-2 in the second leg to make it 5-3 on aggregate after a 2-1 first-leg victory with Sobis scoring in the second leg.
Coached by Celso Roth, the side playing in Abu Dhabi has some quality players in Bolivar, Kleber, Guinazu, Taison, Tinga, Giuliano and Alecsandro apart from Sobis but one man who will be eyeing a final clash against his Italian teammates of Inter Milan squad is Andres D'Alessandro.
Abu Dhabi: Al Jazira's Brazilian duo of Rafael Sobis and Fernando Baiano scored two goals each to help hosts Al Jazira score a resounding 4-0 win over Dubai's Al Wasl in the Etisalat Cup football tournament.