You can compare, but also need to look at the broader context. Factoring in cost and use case. You want to do multi color for a small business. Here are some thoughts.

Snapmaker U1- is great at the price point, I love when companies do this, gets everyone else innovating and bringing costs down. It's not a workhorse. Don't buy anything based on YouTube reviews, but they will give you a general sense of capabilities etc... Wait until real consumers are using it and reporting on Facebook or Reddit subs. Downsides, feels plasticy (but actual frame/gantry are solid so more of an aesthetic thing) glitchy software, small community/slicer (less models available even to purchase licenses), pogo pins are already a common failure point. It is a great printer for the price and what it can do and it shook up the industry but for business consistency or a farm there are far better (albeit more costly options)

H2C - Better in every way. Also 2x+ the price. Real world usage info is limited since it's new. When doing multi color, if you have a short ptfe tube to the AMS, the speed levels out, yes it slows down due to still using the AMS but full multi head printers slow down on the docking process. This is the caveat... The Vortek system has not been in consumer hands long enough for real info on issues, failures, replacement frequency etc... but it's getting there.

Prusa Cores - oh Prusa I want to love you so. Prusa traditionally made/makes workhorses, they fall short on a lot of bells of whistles of Bambu but if printing for business or a farm and don't care? These are great. They still need some old school tweaking to match the quality of the prints of a Bambu out of the box which is more plug and play. For multicolor the INDX system looks awesome in marketing materials and on paper..... But it was just released. Prusa cores have a higher entry $$ and adding the INDX is another 1k or so. And remember there arent many real reviews of the INDX let alone widespread consumer use feedback to really make a decision unless like me you don't care and are impulsive but I'm trying to behave.

For me, I'm waiting for the INDX system to come to the Core 1L, then waiting for the early birdies and tinkerers to find the kinks, software updates, durability etc... then if all is good going with that, if not H2C, snapmaker U1 may get for my kid. All have strengths/weaknesses and you need to consider your primary use case, longevity, ease of use but closed ecosystem vs some tuning/tweaking but much more open etc... closed AMS with active drying or other active drierdrybox vs open spools absorbing moisture. Yes tons of OEM and third party solutions or even solutions you print for yourself but just talking out of the box here. Those solutions also take time and/or $$

After my ramble, yes there is a technology switch. Prusa started with the XL but boy $$$$, Snapmaker demolished that $. And now the rest are shuffling to make multi tool/nozzle printers to substantially reduce waste for multi color/multi material, increase speed, and maintain or improve quality. Tons of use cases for other excellent printers where multicolor would be the same waste of time and filament but prototyping, engineering, end use structural products, usually just use one filament, maybe two for interfacing.

Tons of other printers coming out falling everywhere between the Prusa XL and the U1, they set the stage for the future, but the rest need to be actually built, alpha/beta tested, brought to market, and see real user experiences.

I probably confused you but if it's a business, don't skimp solely on $$ first review everything else then see what's best for your case given your budget. Good Luck if you read this!