mmm.. I don't think this is a matter of one development team which is better than the other - though IoTeX can count on a team extremely well balanced among Research Scientists (so far 10+), top tier engineers from Google, Facebook, Uber, Intel, Bosch, and experienced ecosystem builders (check out the curriculum of Jing Sun, she led 40+ investments in blockchain, security, and IoT!).

Rather, I think it's a matter of design: IOTA may have a huge development team, but if they have to spend all of their energy in trying to overcome the IOTA limitations due to it's DAG design trying to adapt it to IoT, then all that "development power" is just wasted. IoTeX has a very clear design, where each and every aspect required by most IoT applications is taken into accound in advance using proven technologies and innovating those where it's required. Innovations happen thanks a very solid academic background of the Ph.Ds and Research scientists who are part of the team, through the common Academic Paper Publication and Scientific community review process.

I think this is a very solid and promising approach that, according to the roadmap, will give its results very soon. Indeed in August they just launched their partnerships program online and have partners with real-world applications ready to be developed ranging from health-tracking IoT devices to IoT-collected data marketplace, to Smart Home devices. All of them leveraging the unique IoTeX full privacy feature, smart contracts and Instant consensus.

Honestly guys, I think this is really going to revolutionize the IoT industry on next year.