It can certainly be argued it isn't better, even on the merits of the cartridge. In overseas hunting there is normally a bias towards commercial ammo, at least at the destination. Fully loaded, the Ruger it more recoil from lighter rifles, and heavier loads. Maybe more muzzle blast due to shorter barrels and certainly if one is unmutual enough to shoot the muzzle brakes Ruger seems to think were necessary as part of the package, in a group setting. But according to Boddington, there is no discernible difference in killing or stopping power, the ballistic difference is just too close. He tested 6 rifles and the velocities out of the 375s were nearly identical when shot from the matching barrels. From a 375 H&H, these are typically 25 inch barrels, and for the Ruger the standard is 22. Even the H&H with the 22 inch barrel was only 60-100fps slower than the Rugers. Generally longer barrels are favoured until the bush gets really tight.
I generally prefer unimproved cartridges for feeding. At the very least, one would have to admit that "improving" cartridges, making them lower aspect ratio, blunter shouldered, and fatter, is not done to improve their feeding in manually operated platforms.
These short, fat, cartridges are a huge marketing win, less barrel length, shorter actions, proprietary cartridges, a classic less for more, like the Big Mac.
Generally, calling things "modern" is just the terrorist aesthetic/Jacobin approach. Things from Marxism to DQ Storytime all get the same treatment. But it is effective.