True. For defence, Azlar is probably the better choice in Mana Rush Tournaments. Not only because dispellers are much more frequent than healers, but also because the attacker can choose when and if they want to use their specials (and thus try to avoid getting killed by Elena’s riposte)
For offence, however, Elena is a beast as the defenders have no influence on when the attacks or dispels (if there are any dispellers im the def lineup) are used. Also the damage and, consequently, the HP are more evenly distributed in the attacking team (so that Elena has two neighbours for much longer).