Tier 1
TPC Comments
In tournaments we usually see around one third of the population bringing HEROs, with inconsistent results considering its agreed upon Tier 1 position. However, the deck does quite well in other formats. There could be several explanations for this phenomenon: lack of optimized lists, lack of Loading... (reducing consistency). That being said, HEROs are still the best of the Top 3 decks because it's the most flexible, and I can see it winning tournaments more consistently when lists are more streamlined.
HEROs have recently started to see success, but it also has seen some fairly poor conversion rates. This can most likely be attributed to suboptimal decklists and a lack of understanding when it comes to how matchups are supposed to be played. The deck has an insane amount of draw power thanks to Loading... and Loading... (both of which are accessible through various means). This ability to see techs often is why I think it's the best deck in the format, since it can be built to beat practically anything it faces.
Although HERO has relatively poor conversion rates in tournaments given their representation, they still perform the best overall. Loading... has become a new inclusion in some HERO lists, particularly in leagues, but it hasn't seen much use in tournaments yet. It's especially effective against Lyrilusc, as not only can they not deal any damage, but their engine also can't deal with HERO monsters protected by Hallowed Life Barrier. This allows the HERO player to use Loading... next turn, without letting Lyrilusc activate Loading... .
HEROs have high representation in tournaments, but their tops are pretty low compared to their number of entrants. However, as builds become optimized for harder match-ups, this could change. For example: using Loading... against Lyrilusc and then using Loading... on the next turn without them being able to respond to it opens them up to losing that turn.
Loading... is an insane card that has been adopted into HEROs' repertiore. Today's Meta Weekly had ton of HEROs in Top 8 and 4 of them had it, as it solves the Lyrilusc matchup (since using it with the standard combo allows you to survive and then use Loading... in the Draw Phase before they can activate Loading... and instantly win).
I think that HEROs are Tier 1, despite how easily they can be dealt with. Their prevalence and tools they have access to (extra bodies and a free Loading... ) leave me no other choice than to put them in a high spot in the Tier List.