Very strange result: mobile better than desktop, inversed comparing online Google Insight

[Yivan]

Hello,

I got very strange result.
The performance result for mobile are better than desktop (i never saw this), and they seems inverted comparing with online Google Insight.

Here is the config for mobile:

--outputFolder "$REPORT_DIRECTORY" --config ./sitespeed-io.json --budget.configPath ./sitespeed-io-budget.json --mobile \
        --browsertime.connectivity.engine tsproxy -c custom \
        --browsertime.connectivity.alias mobile \
        --browsertime.connectivity.down 5000 \
        --browsertime.connectivity.up 500 \
        --browsertime.connectivity.rtt 100 \
        --lighthouse.settings.emulatedFormFactor mobile \

And for desktop:

--outputFolder "$REPORT_DIRECTORY" --config ./sitespeed-io.json --budget.configPath ./sitespeed-io-budget.json \
        --browsertime.connectivity.engine tsproxy -c custom \
        --browsertime.connectivity.alias desktop \
        --browsertime.connectivity.down 100000 \
        --browsertime.connectivity.up 50000 \
        --browsertime.connectivity.rtt 10 \
        --lighthouse.settings.emulatedFormFactor desktop \

The json config:

{
  "browsertime": {
    "iterations": 1,
    "browser": "chrome",
    "viewPort": "1366x768"
  },
  "crawler": {
    "depth": 1,
    "maxPages": 1,
    "exclude": "",
    "include": ".*"
  }
}

The desktop result:

The mobile result:

Online pagespeed insight desktop:

Online pagespeed insight mobile:

I ran lighthouse localy (the package from google, without sitespeed.io), and the order is ok and like the online pagespeed insight.
So it really seems, like it is inverted on the plugin in sitespeed.io !?
Is it a bug ?
I didn't inverted, because formfactor on snapshot done by lighthouse is well on format desktop for desktop profile/connectivity and well on format mobile for mobile profile/connectivity.

Thanks!

[Yivan]

Got it! There is no bug in the lighthouse plugin for sitespeed.io.

With the lightouse stand-alone I was using for desktop the profile lr-deskop. And online Google Page Insight seems too.

So the solution would be to allow using the lr-desktop and lr-mobile with this lighthouse plugin.
I have opened an issue asking for this improvement: #47

It will solve this issue, and provide better result in coherence with online Google Pagespeed Insight.